E:/p4/sw/physx/PxShared/1.0/trunk/src/foundation/include/PsInlineAllocator.h
Go to the documentation of this file.00001 // This code contains NVIDIA Confidential Information and is disclosed to you 00002 // under a form of NVIDIA software license agreement provided separately to you. 00003 // 00004 // Notice 00005 // NVIDIA Corporation and its licensors retain all intellectual property and 00006 // proprietary rights in and to this software and related documentation and 00007 // any modifications thereto. Any use, reproduction, disclosure, or 00008 // distribution of this software and related documentation without an express 00009 // license agreement from NVIDIA Corporation is strictly prohibited. 00010 // 00011 // ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES 00012 // NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO 00013 // THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT, 00014 // MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE. 00015 // 00016 // Information and code furnished is believed to be accurate and reliable. 00017 // However, NVIDIA Corporation assumes no responsibility for the consequences of use of such 00018 // information or for any infringement of patents or other rights of third parties that may 00019 // result from its use. No license is granted by implication or otherwise under any patent 00020 // or patent rights of NVIDIA Corporation. Details are subject to change without notice. 00021 // This code supersedes and replaces all information previously supplied. 00022 // NVIDIA Corporation products are not authorized for use as critical 00023 // components in life support devices or systems without express written approval of 00024 // NVIDIA Corporation. 00025 // 00026 // Copyright (c) 2008-2014 NVIDIA Corporation. All rights reserved. 00027 // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved. 00028 // Copyright (c) 2001-2004 NovodeX AG. All rights reserved. 00029 00030 #ifndef PSFOUNDATION_PSINLINEALLOCATOR_H 00031 #define PSFOUNDATION_PSINLINEALLOCATOR_H 00032 00033 #include "PsUserAllocated.h" 00034 00035 namespace physx 00036 { 00037 namespace shdfnd 00038 { 00039 // this is used by the array class to allocate some space for a small number 00040 // of objects along with the metadata 00041 template <uint32_t N, typename BaseAllocator> 00042 class InlineAllocator : private BaseAllocator 00043 { 00044 public: 00045 InlineAllocator(const PxEMPTY v) : BaseAllocator(v) 00046 { 00047 } 00048 00049 InlineAllocator(const BaseAllocator& alloc = BaseAllocator()) : BaseAllocator(alloc), mBufferUsed(false) 00050 { 00051 } 00052 00053 InlineAllocator(const InlineAllocator& aloc) : BaseAllocator(aloc), mBufferUsed(false) 00054 { 00055 } 00056 00057 void* allocate(uint32_t size, const char* filename, int line) 00058 { 00059 if(!mBufferUsed && size <= N) 00060 { 00061 mBufferUsed = true; 00062 return mBuffer; 00063 } 00064 return BaseAllocator::allocate(size, filename, line); 00065 } 00066 00067 void deallocate(void* ptr) 00068 { 00069 if(ptr == mBuffer) 00070 mBufferUsed = false; 00071 else 00072 BaseAllocator::deallocate(ptr); 00073 } 00074 00075 PX_FORCE_INLINE uint8_t* getInlineBuffer() 00076 { 00077 return mBuffer; 00078 } 00079 PX_FORCE_INLINE bool isBufferUsed() const 00080 { 00081 return mBufferUsed; 00082 } 00083 00084 protected: 00085 uint8_t mBuffer[N]; 00086 bool mBufferUsed; 00087 }; 00088 } // namespace shdfnd 00089 } // namespace physx 00090 00091 #endif // #ifndef PSFOUNDATION_PSINLINEALLOCATOR_H
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